Online Books by
Steven L. Wert
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Wert, Steven L.: Effects of soil and foliar applications of nitrogen fertilizers on a 20-year-old Douglas-fir stand (Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1979), also by Richard E. Miller, United States Forest Service, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)- Wert, Steven L.: Wedge measures parallax separations : on large-scale 70-mm. aerial photographs (Pacific Southwest Forest & Range Experiment Station, 1967), also by Richard J. Myhre and Calif.) Pacific Southwest Forest and Range Experiment Station (Berkeley (page images at HathiTrust)
- Wert, Steven L.: White fir stands killed by tussock moth : 70-mm. color photopgraphy aids detection (Pacific Southwest Forest & Range Experiment Station, 1968), also by Boyd E. Wickman (page images at HathiTrust)
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